Change mermaid dependencies and remove old ones

[thomasnares]

Questions	Answers
Description?	I changed mermaid dependencies to a more recent version (was unused for the moment, and i'm making mermaid flowcharts for new documentation.
Type?	improvement
BC breaks?	no
Deprecations?	no
Possible impacts?	no, Mermaid was not used for the moment

Should we keep a CDN hosted dependency ? let me know if we need to host our copy of mermaid.js

[NeOMakinG]

@thomasnares using a public CDN isn't really respecting the privacy of the viewers of the documentation as the CDN can still gather some data on who is browsing the documentation, we removed every CDNs from the core for that reason, I think we should do the same for the documentation and keep the dependency local

[thomasnares]

@NeOMakinG thanks, i fixed it